Antimony

Antimony (sb)
Antimony was discovered by Basil Valentine of Germany in 1450.
Atomic # 51 Atomic mass 121.76 amu

number of protons, electrons, and neutrons

p=51 e=71

where it’s found and in what from (state of matter-solid liquid, gas)
solid

physical facts:
a. Melting points 630.0 °C
b. Boiling point 1750.0 °C
c. Density 6.684 g/cm3

this element is used to hardens lead, plastics, chemicals
the abundence in earth crust is 0.2 parts per million by weight
Interesting facts

the name originates from the Greek words anti and monos meaning "opposed to solitude".

sources are lanl. gov
facts about antinmony